// Test interface assignment.

package main

type	Iputs	interface {
	puts	(s string) string;
}

// ---------

type	Print	struct {
	whoami	int;
	put	Iputs;
}

func (p *Print) dop() string {
	r := " print " + string(p.whoami + '0')
	return r + p.put.puts("abc");
}

// ---------

type	Bio	struct {
	whoami	int;
	put	Iputs;
}

func (b *Bio) puts(s string) string {